4. Communications: electrical
  5. Condition responsive indicating system
  6. With particular system function

Akio Tsumuji

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Fire alarm system

Communications: electrical – Condition responsive indicating system – With particular system function
Patent

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Fire alarm system

Communications: electrical – Continuously variable indicating – With meter reading
Patent

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Fire alarm system

Communications: electrical – Condition responsive indicating system – With particular system function
Patent

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Fire receiver in fire alarm system

Registers – Systems controlled by data bearing records
Patent

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Line interruption supervisory device for a fire alarm system

Communications: electrical – Condition responsive indicating system – With particular system function
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Profile ID: LFUS-PAI-P-242656

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